Island



(No Mdel.)

'E.'H. NORRIS.

ATTACHMENT FOR BIGYGLES. No. 603,654. Patented May 10,1898.

WITNEEEIEE: IN N R' (iii-MM,

UNITED STATES PATENT OFFICE.

EDW'ARD H. NORRIS, OF PROVIDENCE, RHODE ISLAND.

ATTACHMENT FOR BICYCLES.

SPECIFICATION forming part of Letters Patent No. 603,654, dated May 10,1898. Application filed March 15, 1897. Serial No. 627,675. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD H. NORRIS, a citizen of the United States,residing. at Pro vidence, in the county of Providence, State of RhodeIsland, have invented certain new and useful Improvements in Attachmentsfor Bicycles,of which the following is a specification.

My invention relates to attachments for bicycles, and more especially todevices for automatically cleaning the sprocket-chain of a bicycle whenit is in motion, the object of my invention being to provide a device ofthis character which shall operate with practically no noise or frictionand shall also be simple in construction and efficient for its intendedpurpose.

My improved attachment may, if desired, include a device for lubricatingthe sprocketchain.

In the accompanying drawings, Figure 1 is a side elevation of a portionof a bicycle with a preferred form of my invention applied thereto. Fig.2 is a central vertical trans.- Verse section of the attachment shown inFig. 1. Fig. 3 is an edge view of a slightly-modified form of myattachment. Fig. 4 is a similar View of another modified form.

My attachment comprises two similar arms 2 2, preferably stamped fromsheet metal and bent, as shown at 3 3, toembrace the rod 4, which formsa part of the bicycleframe. These arms are clamped together by bolts 5and nuts 6. Between the arms 2 2 is mounted to rotate a brush 7, which,in order that it may rotate with as little noise and friction aspossible, is provided with a metal core or.

journal 8, fitted to turn on the stationary axle 9. In this manner along bearing is provided for the brush 7, which reduces the wear onthese parts and will run for a much longer time without being oiled thanwould be the case if the axle were fixed to the brush and journaled inthe arms 2 2.

When my device is secured in place on the rod 4, the lower portion ofthe sprocket-chain 10 passes between the arms 2 2 and rests upon thebrush 7, and as there is always more or less slack in the chain at thispoint its own weight keeps it always in contact with the brush, wherebythe latter is made to rotate and clean the chain as said chain passesover it.

The axle 9 is grooved near its ends, as at 11, and is held in place inthe arms 2 2 by having its grooves 11 passed into the narrow portions ofkeyhole-slots 12 formed in said arms, the circular portions of theseslots 12 being of such size as to permit the ends of the axle 9 to passthrough them. The narrow portions of said slots point away from thesprocket-chain, as shown, and the pressure of said chain against thebrush 7 thus assists in keeping the axle in its proper position.

It Will be noticed that the brush 7 bears against the outside of thesprocket-chain. If

desired, the inside of the chain may be lubricated bya suitable device,as shown in Figs. 3 and 4. In Fig. 4 I have shown for this purpose ametal casing 13, within which is secured one end of a tongue or pad ofyielding absorbent material 14, which is arranged to bear against theinside of the sprocket-chain in opposition to the brush 7. In use thepad 14 is saturated with a lubricant and thus lubricates the chain asthe latter passes beneath it. The casing 13 is shaped to conform to theupper part of the space inclosed by the arms 2 2 and is held in placebetween said arms by having the lower bolt 5 passed through its upperend, as shown, so that it may be tightly .clamped in place by means ofthe nut 6 on said bolt.

In Fig. 3 I have shown a different form of lubricator, consisting of anoblong receptacle 15, clamped by means of a flange 16, projecting fromits bottom between the upper ends of the arms 2 2, the upper bolt 5passing through said flange. j ournaled a small brush 17, which in usebears against the insideiof the upper portion of the sprocket-chain andis rotated thereby, and thus applies to the chain in an obvious mannerthe lubricant with which the receptacle 15 is partly filled.

A supplementary brush 18 may, if desired, be used in connection withthe. brush 7 for cleaning the chain, as shown in Fig. 3. This brush 18and its axle may be constructed and secured to the arms 2 2 in the samemanner as the brush 7 and its axle, and the brushes are located at sucha distance apart that the sprocket-chain must come in contact with bothof them as it passes between them.

I claim as my invention- In this receptacle 15 is 1. An attachment forbicycles comprising two arms 2 2 arranged to be clamped to abicycle-frame and to receive the sprocket-chain between them, and abrush mounted to rotate between said arms and support saidsprocketchain, for the purpose set forth.

2. An attachment for bicycles comprising two arms 2 2 arranged to beclamped to a bicycle-frame and to receive the sprocket-chain betweenthem, keyhole-slots in said arms having their narrow portions pointingaway from the sprocket-chain, an axle having grooved, ends held in saidkeyhole-slots, and a brush mounted to rotate on said axle and supportsaid sprocket-chain, for the purpose set forth.

3. An attachment for bicycles comprising EDWARD H, NORRIS.

Witnesses:

GEORGE J. DEVON, JOSEPH L. MULVEY.

